Got one of these refurbished for £50. It's a great box and works well. Menus are easy to use and remote is laid out well. Picture quality is everything you would expect from 1080i. Occasionally (once every couple of weeks) the box will not turn on after being on stand-by, meaning it needs to be switched off at the plug, wait 10 seconds, then try again. There is no ability to view a channel while still looking at the EPG, but you can browse channels without changing with the up and down keys on the remote.
This is a great little box, so don't be put off by the low price, it really does do the job!